Paratachys spp., male aedeagus, i.e., median lobe and associated smaller right paramere and larger left paramere (right lateral view) A P. terryli; Kauai: Namolokama Mtn., 23-v-2005 (CUIC) B P. arcanicola lectotype slide; “Tachys arcanicola Blackburn Type ♂ E.C.Z. (permanent slide, Euparal?, left paramere missing; NHMUK).” C P. haleakalae; East Maui: Haleakala N. P., Kipahulu Vy., 30-iv-1991 (CUIC) D–F P. aaa; Hawai‘i I D Puna, Mountain View, Kazumura Cave, 21-xi-2018, lot HI00713 (CUIC) E Kau, Ocean View, Kipuka Kanohina System, 21-xi-2017, lot HI00179 (CUIC) F South Hilo, Kaumana Cave, 19-iii-2019, lot HI00942 (CUIC); disassociated left paramere below, ectal view.

  Part of: Liebherr JK (2021) Hawaiian Paratachys Casey (Coleoptera, Carabidae): small beetles of sodden summits, stony streams, and stygian voids. In: Spence J, Casale A, Assmann T, Liebherr JК, Penev L (Eds) Systematic Zoology and Biodiversity Science: A tribute to Terry Erwin (1940-2020). ZooKeys 1044: 229-268.